High quality goods and services are made available to consumers because of producers
a. hold self-interests
b. would like to compete
c. look for subsidies
d. specialize in production

The correct answer is A.

Goods and services are available to consumers, who can purchase them to satisfy their needs, because such production meanwhile constitutes the means through which a producer pursues his self-interests. Selling the merchandise generates profits for the producer who, otherwise, would not continue with his transformation and commercial activities.

This was the base of the economy according to Adam Smith.

the right answer is the third one: turnpikes went short distances to connect markets. turnpikes, also known as toll roads, were very important for trade and transportation (of people, goods and products) in the 19th century, coinciding with the expansion towards the west. they contributed significantly to the economic development of the united states.